Heating element



lune 24, 1924. 1,498,655

O. HAUPTMAN HEATING ELEMENT Filed March 31. 1923 2 Sheets-Sheetl IIHIHI mum.

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v scm? Hf/aPrM/q/V BY L Vzw( A TTORNEY4 C. HAUPTMAN `June 24, 1924- HEATING ELEMENT Filed March 3l, 1923 2 Sheets-Sheet 2 Osc/JR HH UPT/VAN Patented June 24, 1924.

' UNITED STATES OSCAR E-AUPTIAN, 0F NEW YORK, N. Y.

HEATING Application led larch'l, 1928. Serial lo. 629,108.

To all whom t may concern.'

Be it known that I, OSCAR HAUPTMAN, a citizen of the United States, residin at New York, county of New York, and tate of New York, have invented certain new and useful Im rovements in Heating Elements, of which the following is a specification.

The principal object of this invention is to provide a new and improved heating unit particularly devised for heating large surfaces such as are used in clothes pressing devices of the type disclosed in m co-pending applications for Patents erial No. 584,605 tiled August 28th, 1922 and Serial N o. 629,102, led March 31, 1923.

A further object is to so construct the heatin unit that it will be able to withstand t e heavy pressures to which it is subjected in devices of the above mentioned character.

For the accomplishment of these and such further objects as will hereinafter be apparent to those skilled in the art to which this appertains, the invention consists in the construction, combination and arrangement l of parts herein specifically described and illustrated in the accompanying drawings, wherein is shown a preferred embodiment of the invention, but it is to be understood that changes, variations and modifications may be resorted to which fall within the scope of the claims hereunto appended.

In the drawings forming a portion of this specification Fig. 1 is a perspective view of a pressing device with which the heating unit is intended to be used.

Fig. 2 is a horizontal section through the presslng device.

Fig. 3 is an enlarged cross sectional detail on the line 3-3 of Fig. 2.

Fig. 4 is an enlarged section on the line 4--4 of Fig. 2.

Fig. 5 is a plan view of the heating unit per se and.

Fig. 6 is a section on the line 6 6 of Fig. 2. p

As shown in the drawings the pressing device consists of a pair of pivotally connected upper and lower. shallow box-like sections 10 and 11 respectively secured in clamping engagement by the clamps 12. Each of the sections is provided with a backing 13 preferably of cotton padding or other suitable material upon the top of which the Each unit consists of a len c gth of chrome nlckel resistance w1re, approxlmately 35 feet of #16 B & -S gauge wire being used for each unit, and the length of wire being extended backward and forward transversely across the sections to form a lurality of spaced runs or stretches as clear y shown in the drawings. The current is brought into the heating units through the lead wires 15, and 16, the wire 15 leading to the unit of upper section and the wire 16 leading to the lower section, connection preferably being made through the se arable plug connections 17 as shown in ig. 6. The units are wired in series and connection between the units is made by means of the lexible wire 18 as shown in Fi 3.

The wire 14 which is asbestos covered is placed between two sheets of canvas 19 which is stitched as at 20 to provide pockets thereby holding ,the wires against relative movement and the canvas acting as a protective covering for lthe wires and its asbestos coverin A sheet of insulating material 21 pre erably of asbestos paper of substantially the same area as the backing 13-is placed upon the backing and the heating unit consisting of the w1re secured between the canvas 19 is laid upon the insulating sheet 21,.after which a pressing cloth 22 preferabl of two sheets of canvas is laid over the heating units. The pressing cloth 22 is smoothed out and is held in a taut condition by means of the stripsA or bars 23 which are detachably as by the screws 24.

A suitable switch (not shown) is interposed in the lead wires 15l and 16 and a thermostat 25 for automatically regulating the temperature of the heating units is con- ,nected in series in the top umt.

The operation of the device is as follows, the garment to be pressed is placed upon the pressing cloth of the lower section 11 and the upper section is swung downwardsecured to the sections ly, and the clamps 12'are secured to hold the ,sections in clamping engagement. The man-V ner in which the wires 14 are secured within the canvas covering 19 prevents damage to asbestos covering ot the wires, while the asbestos covering of the wires as well as the insulating sheet 2l will cause the heat from the wires yto be distributed evenly across the whole area of the sections. The current being turned on will cause the temrature of the wires to be raised according to the well .known principles of devices of this character, the thermostat 25 preventing the temperature from being raised to an excessive pointby short circuiting the current. As the construction of the thermostat forms no part of the present invention a detailed description thereof is therefore omitted. I have found that sucient heat is generated to thoroughly and etliciently ress a air of trousers in about three minutes with the use of my device.

Having thus described my invention, what i claim as new and desire to secure by Letters Patent is:

1. An electrical heating unit comprising a pair of substantiall rectangular canvas sheets, a length of resistance wire arranged in transversely extending spaced stretches' between said sheets of canvas and means to secure said stretches of wires 1n spaced relationship.

2. An electrical heating unit comprising a pair of substantially rectan lar canvas sheets, a length of resistance wire arranged in transversely extending spaced stretches between said sheets of canvas and means to secure said stretches of wires in spaced relationship comprising a plurality of pockets formed vin said sheets.

3. An electrical-heating unit comprising nti-eases a pair of substantially rectangular canvas sheets, a length of resistance wire arranged between Vsaid sheets of canvas, insulatin means interposed between said wires an canvas and means to secure said sheets of canvas together and to hold said stretches of wire securely between said canvas 'in spaced relationship whereb said canvas will protect said insulation an prevent kinking or breaking of said wire.

5. An electrical heating unit comprising a pair of substantially rectan lar canvas sheets, a length of res1stance wire arranged in transversely extending spaced stretches between said sheets of canvas, insulating means interposed between said wires and canvas, and said sheets of canvas being secured together by a plurality of rows of stitches adjacent to and extending in parallelism with said stretches of wire to provide a pocket in which said stretches of wire and insulating material are received. V

In testimony whereof I have axed my signature.

OSCAR HAUPTMAN. 

